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How many neutrons are in the element phosphorus?

Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2•9H2O

Which has a higher frequency, a neutron of electron? Why?

In the coffee-cup calorimeter you used in the laboratory, which of the following statements is true? A. The water is part of the system. (MA) B. The water is the system and the ice is the variable. C. The foam cups are not part of the system. D.

What volume of 6.00 m naoh solution is required to prepare 0.50 ml of 0.15 m naoh solution a. 12.5 ml of naoh b. 25 ml of naoh c. 30 ml of naoh?

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How do compounds affect an atom's stability

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container

What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N?